No city or town shall in any manner create any indebtedness exceeding four per cent (4%) of the assessed value of the taxable property therein, except that an additional indebtedness of four per cent (4%) of the assessed value of the taxable property therein may be created for sewage disposal systems. Indebtedness created for supplying water to cities or towns is excepted from the limitation herein.

No county shall in any manner create any indebtedness exceeding two per cent (2%) of the taxable property therein.

No school district shall in any manner create any indebtedness exceeding ten per cent (10%) on the assessed value of the taxable property therein for the purpose of acquiring land, erection, enlarging and equipping of school buildings.

All limitations herein shall refer to the last preceding general assessment.